Remove pollent from grpc_lb_policy_pick_args

src/core/ext/client_config/client_channel.c

@@ -545,6 +545,7 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
   GPR_TIMER_BEGIN("pick_subchannel", 0);
 
   channel_data *chand = elem->channel_data;
+  call_data *calld = elem->call_data;
   continue_picking_args *cpa;
   grpc_closure *closure;
 
@@ -574,9 +575,8 @@ static bool pick_subchannel(grpc_exec_ctx *exec_ctx, grpc_call_element *elem,
     int r;
     GRPC_LB_POLICY_REF(lb_policy, "pick_subchannel");
     gpr_mu_unlock(&chand->mu);
-    const grpc_lb_policy_pick_args inputs = {calld->pollent, initial_metadata,
-                                             initial_metadata_flags,
-                                             &calld->lb_token_mdelem};
+    const grpc_lb_policy_pick_args inputs = {
+        initial_metadata, initial_metadata_flags, &calld->lb_token_mdelem};
     r = grpc_lb_policy_pick(exec_ctx, lb_policy, &inputs, connected_subchannel,
                             NULL, on_ready);
     GRPC_LB_POLICY_UNREF(exec_ctx, lb_policy, "pick_subchannel");

src/core/ext/client_config/lb_policy.h

@@ -54,8 +54,6 @@ struct grpc_lb_policy {
 
 /** Extra arguments for an LB pick */
 typedef struct grpc_lb_policy_pick_args {
-  /** Parties interested in the pick's progress */
-  grpc_polling_entity *pollent;
   /** Initial metadata associated with the picking call. */
   grpc_metadata_batch *initial_metadata;
   /** See \a GRPC_INITIAL_METADATA_* in grpc_types.h */

src/core/ext/lb_policy/grpclb/grpclb.c

@@ -500,8 +500,8 @@ static void rr_handover(grpc_exec_ctx *exec_ctx, glb_lb_policy *glb_policy,
       gpr_log(GPR_INFO, "Pending pick about to PICK from 0x%" PRIxPTR "",
               (intptr_t)glb_policy->rr_policy);
     }
-    const grpc_lb_policy_pick_args pick_args = {
-        pp->pollent, pp->initial_metadata, pp->initial_metadata_flags,
+    const grpc_lb_policy_pick_args pick_args = {pp->initial_metadata,
+                                                pp->initial_metadata_flags,
                                                 pp->lb_token_mdelem_storage};
     grpc_lb_policy_pick(exec_ctx, glb_policy->rr_policy, &pick_args, pp->target,
                         (void **)&pp->wrapped_on_complete_arg.lb_token,
@@ -806,8 +806,6 @@ static int glb_pick(grpc_exec_ctx *exec_ctx, grpc_lb_policy *pol,
           GRPC_MDELEM_REF(glb_policy->wc_arg.lb_token));
     }
   } else {
-    grpc_polling_entity_add_to_pollset_set(exec_ctx, pick_args->pollent,
-                                           glb_policy->base.interested_parties);
     add_pending_pick(&glb_policy->pending_picks, pick_args, target,
                      on_complete);